diff --git a/slides/cours_15.md b/slides/cours_15.md
index af75bc305f00e1affa75cce996f8085a172d1b54..592ac2e3197480bd20ce1f32fcd217e982857a2d 100644
--- a/slides/cours_15.md
+++ b/slides/cours_15.md
@@ -41,7 +41,7 @@ patat:
 ::: columns
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1-->2;
     1-->3;
@@ -54,7 +54,7 @@ graph TD;
 . . .
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1-->2;
     1-->3;
@@ -71,7 +71,7 @@ graph TD;
 ::: columns
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1-->2;
     1-->3;
@@ -86,7 +86,7 @@ graph TD;
 . . .
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1;
 ```
@@ -99,7 +99,7 @@ graph TD;
 ::: columns
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1---2;
     1---3;
@@ -111,7 +111,7 @@ graph TD;
 . . .
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph BT;
     1-->2;
     1-->3;
@@ -130,7 +130,7 @@ graph BT;
 ::: columns
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1[degré 2]-->2[degré 0];
     1-->3[degré 3];
@@ -143,7 +143,7 @@ graph TD;
 . . .
 
 :::: column
-```mermaid
+```{.mermaid format=pdf width=300 loc=figs/}
 graph TD;
     1[niveau 1]-->2[niveau 2];
     1-->3[niveau 2];
@@ -157,3 +157,20 @@ graph TD;
 
 * Les noeuds de degré 0, sont des feuilles.
 
+# Application: recherche rapide
+
+* Le nombre secret ou la recherche dychotomique (nombre entre 0 et 10).
+
+```{.mermaid format=pdf width=300 loc=figs/}
+graph LR;
+    5-->2;
+    5-->7;
+    7-->8;
+    7-->6;
+    8-->9;
+    9-->10;
+    2-->1;
+    2-->3;
+    3-->4;
+    1-->0;
+```